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ImagePicker.java

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package quickandroid;
import org.qtproject.qt5.android.QtNative;
import android.content.Intent;
import android.util.Log;
import android.app.Activity;
import java.util.Map;
import android.net.Uri;
import java.util.HashMap;
import android.database.Cursor;
import android.provider.MediaStore;
import java.text.SimpleDateFormat;
import java.io.File;
import java.util.Date;
import android.os.Environment;
import android.content.ClipData;
import java.util.List;
import java.util.ArrayList;
public class ImagePicker {
// Random
public static final int PICK_IMAGE_ACTION = 0x245285a3;
public static final int TAKE_PHOTO_ACTION = 0x29fe8748;
public static final String PICK_IMAGE_MESSAGE = "quickandroid.ImagePicker.pickImage";
public static final String TAKE_PHOTO_MESSAGE = "quickandroid.ImagePicker.takePhoto";
public static final String CHOSEN_MESSAGE = "quickandroid.ImagePicker.chosen";
private static final String TAG = "quickandroid.ImagePicker";
private static Uri mPhotoUri;
private static Boolean broadcast = false;
static {
SystemDispatcher.addListener(new SystemDispatcher.Listener() {
public void onDispatched(String type , Map message) {
if (type.equals(PICK_IMAGE_MESSAGE)) {
pickImage(message);
} else if (type.equals(TAKE_PHOTO_MESSAGE)) {
takePhoto(message);
} else if (type.equals(SystemDispatcher.ACTIVITY_RESULT_MESSAGE)) {
onActivityResult(message);
}
}
});
}
static void pickImage(Map message) {
Boolean multiple = false;
Activity activity = org.qtproject.qt5.android.QtNative.activity();
Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
if (message.containsKey("multiple")) {
multiple = (Boolean) message.get("multiple");
}
if (multiple) {
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
}
// >= API 18
activity.startActivityForResult(intent, PICK_IMAGE_ACTION);
}
static void takePhoto(Map message) {
if (message.containsKey("broadcast")) {
broadcast = (Boolean) message.get("broadcast");
}
String timeStamp = new SimpleDateFormat("yyyy-MM-dd HH.mm.ss").format(new Date());
File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM);
if(!storageDir.exists() && !storageDir.mkdir())
return;
File image = new File(storageDir.getAbsolutePath() + "/" + timeStamp + ".jpg");
mPhotoUri = Uri.fromFile(image);
Log.d(TAG,"takePhoto : " + mPhotoUri);
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, mPhotoUri);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
Activity activity = org.qtproject.qt5.android.QtNative.activity();
activity.startActivityForResult(intent,TAKE_PHOTO_ACTION);
}
static private void onActivityResult(Map message) {
int resultCode = (Integer) message.get("resultCode");
if (resultCode != Activity.RESULT_OK)
return;
int requestCode = (Integer) message.get("requestCode");
Intent data = (Intent) message.get("data");
if (requestCode == PICK_IMAGE_ACTION) {
importImage(data);
} else if (requestCode == TAKE_PHOTO_ACTION) {
// Android 4.x. data will be null.
// Android 6.x. data is not null
importImageFromFileUri(mPhotoUri);
if (broadcast)
broadcastToMediaScanner(mPhotoUri);
}
}
static private void importImage(Intent data) {
Uri uri = data.getData();
Log.d(TAG,"importImage: uri:" + uri);
Log.d(TAG,"importImage: type: " + data.getType());
if (data.getClipData() != null) {
importImageFromClipData(data);
} else if (uri != null ) {
if (uri.getScheme().equals("file")) {
importImageFromFileUri(uri);
} else {
importImageFromContentUri(uri);
}
}
}
static private void importImageFromFileUri(Uri uri) {
ArrayList<Uri> list = new ArrayList(1);
list.add(uri);
importImageFromFileUri(list);
}
static private void importImageFromFileUri(List uris) {
Map reply = new HashMap();
ArrayList<String> list = new ArrayList(uris.size());
for (int i = 0 ; i < uris.size() ; i++) {
list.add(uris.get(i).toString());
}
reply.put("imageUrls",list);
SystemDispatcher.dispatch(CHOSEN_MESSAGE,reply);
}
static private void importImageFromContentUri(Uri uri) {
Activity activity = org.qtproject.qt5.android.QtNative.activity();
String[] columns = { MediaStore.Images.Media.DATA, MediaStore.Images.ImageColumns.ORIENTATION };
Cursor cursor = activity.getContentResolver().query(uri, columns, null, null, null);
if (cursor == null) {
Log.d(TAG,"importImageFromContentUri: Query failed");
return;
}
cursor.moveToFirst();
ArrayList<Uri> uris = new ArrayList(cursor.getCount());
for (int i = 0 ; i < cursor.getCount(); i++) {
int columnIndex;
columnIndex = cursor.getColumnIndex(columns[0]);
String path = cursor.getString(columnIndex);
/*
columnIndex = cursor.getColumnIndex(columns[1]);
int orientation = cursor.getInt(columnIndex);
*/
if (path == null) {
Log.d(TAG,"importImageFromContentUri: The path of image is null. The image may not on the storage.");
continue;
}
Uri fileUri = Uri.fromParts("file",path,"");
uris.add(fileUri);
Log.d(TAG,"importImageFromContentUri: " + fileUri.toString());
}
importImageFromFileUri(uris);
cursor.close();
}
private static void importImageFromClipData(Intent data) {
ClipData clipData = data.getClipData();
Log.d(TAG,"importFromClipData");
if (clipData.getItemCount() == 0)
return;
ArrayList<Uri> uris = new ArrayList(clipData.getItemCount());
for (int i = 0 ; i < clipData.getItemCount() ; i++ ){
Uri uri = clipData.getItemAt(i).getUri();
uris.add(resolveUri(uri));
}
importImageFromFileUri(uris);
}
static private Uri resolveUri(Uri uri) {
Activity activity = org.qtproject.qt5.android.QtNative.activity();
String[] columns = { MediaStore.Images.Media.DATA, MediaStore.Images.ImageColumns.ORIENTATION};
Cursor cursor = activity.getContentResolver().query(uri, columns, null, null, null);
if (cursor == null) {
Log.d(TAG,"Query failed");
return Uri.parse("");
}
cursor.moveToFirst();
int columnIndex;
columnIndex = cursor.getColumnIndex(columns[0]);
String path = cursor.getString(columnIndex);
// columnIndex = cursor.getColumnIndex(columns[1]);
// int orientation = cursor.getInt(columnIndex);
cursor.close();
return Uri.fromParts("file",path,"");
}
private static void broadcastToMediaScanner(Uri uri) {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
mediaScanIntent.setData(uri);
Activity activity = org.qtproject.qt5.android.QtNative.activity();
activity.sendBroadcast(mediaScanIntent);
}
}
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